Device for positioning string handles on paper bags



June 10, 1930. v c. G. EATON 1,762,857

' DEVICE FOR POSITIONING STRING HANDLES ON PAPER BAGS Filed March 9, 1929 5 Sheets-Sheet 1 l E 1 j p229 Jivenlor- V cm: c 84;

By W cm". o n m;

June 10, 1930. c, G, E ON I 1,762,857

DEVICE FOR POSITIONING STRING HANDLES ON PAPER BAGS Filed March 9, 1929 3 Sheets-Sheet 2 lnuenaor:

June 10, 1930. c. G. EATON DEVICE FOR POSITIONING STRING HANDLES ON PAPER BAGS 3 Sheets-Sheet 3 Filed March 9, 1929 Patented June 10, 1930 onrrsn stares PATENT oF-Fics CARLETON G. EATON, OF WALTHAM, MASSACHUSETTS, ASSIGNORYTO A. M. EATON PAPER COMPANY, 'OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS 7 Application filed. March 9,

This invention relates to the manufacture of bags and more particularly to mechanism for positioning and securing string handles on paper shopping bags.

In the manufacture of paper shopping bags it has been common practice to cut string to suitable length and position and hold the same upon the bag manually while holding the bag in suitable position in a riveting machine for securing the string to the bag. This has involveda great deal of manual labor and large item in the cost of producing such bags. Moreover, the-use of this method has delayed production and limited the productive capacity'of the factory. When the handle and bag are positioned manually relative to each other in i this manner the ends of the handle often extend different distances from the top edge of the bag and the" rivets often are'positioned unevenly. These occurrences have been frequent when it has been attempted to speed upproduction.

It is the object 'of the present invention to provide ailow cost mechanism which will eliminate this'manual labor to a large extent and thereby lower the-cost of production of such bags and make possible the production of bags having a neat uniform appearance.

The invention will'be .more clearly understood from the following description in conjunction with-the accompanying drawings, in which:

Fig. 1 is a perspective view of one type of bag produced by use of the mechanism of the invention; I

Fig. 2 is a front elevational view partly in diagram of a device embodying the invent-ion. Fig. 3 is asectional view taken on the line 33, Fig. 2. a

' Fig. 4-is a sectional view takenon the line 4-4,, Fig. 2,. certain of the parts being broken away.

Figs. 5, 6, and 7 are views similar to Fig. 4 showing the different positions of the various partsof the device during operation.

Before explaining in detail the present invention, it is to be understood that-the invention is not limited in its application to DEVICE FOR POSITIONING STRING HANDLES 0N 'PAPER BAGS 1929. Serial No. 345,748.

the details of construction and arrangements of parts illustrated. in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out'in various ways. Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation, and it is not intended to limit the'inventi'on beyond the terms of the several claims hereto appended-as considered in view of the prior art and the requirements thereof.

Theinventlon is directed the manufacture of paper bags one form of which is illustrated in Fig. 1. .In the manufacture of the bag 10 illustrated, sheet paper is shaped to tubular form and one end closed to form the bottom of the bag; I Pref;-

erably a strip .of gummed paper tape ll'is moistened uponits gummed side and secured to the bag near its open end on diametrically opposite portions and extending downwardly below the point of attachment of the particularly to string handles 12. The top edge of the open end then is folded downwardly to provide flaps 13. The handles 12 are secured as illustrated by 'upper and lower fasteners 80 and 8l respectively. The present invention is directed particularly to mechanism for positioning the bag 10 and handles12relatively in an-operative relation to a suitable machine for settingthe I fasteners to secure the handles to the bag. A device suitable for this purpose, as illustrated in the accompanying drawings, may comprise a frame F including front upright members 15 and rear upright members 16. The members 15 and 16 are connected by an intermediate cross vmember 18' and top cross members 19. A plate 20 is formed integrally orv secured in any. suitable manner at'the upper ends of the uprights '15- and 16 and is provided at its opposite side edges with suitable guides 23 for a movable slide 24b. The plate, 20 is provided with a forwardly extending apron 26 upon which a template '27 is mounted at a point spaced rearwardly from the forward edge of the apron. The template 27 is providedwlth an inner surface 28. of the desired shape of r the string handle. A similarly shaped sur- V tive to the template 27 after the string has been shaped thereagainst. For this purpose, in the embodiment of the invention illustrated, arms 30 extend forwardly from the slide 24 and each is provided at its forward edge with a bag positioning surface 31 adapted to engage the top edge of the bag when the slide is moved to its forward position. If desired, the forward edge of the template 27 may also be provided with a bag positioning surface 33. The plate 20 of the frame is positioned with the apron 26 in operative relation to suitable fastener setting devices, generally indicated at 35 and 36 which may be of the usual construction commonly employed for forming and inserting fasteners in a paper bag.

The slide 24 is provided with rearwardly extending spaced lugs 40 adapted to receive therebetween one arm 41 of a bell crank fixed upon a shaft which extends between and is rotatably mounted in the intermediate cross member 18. The free end of the arm 41 is provided with an elongated slot 42 adapted to receive a pin 43 extending between the lugs 40. The other arm 46 of the bell crank is connected to one end of a rod 47, the other end of which is connected to a foot-treadle 48. The foot treadle 48 is pivotally mounted upon a shaft 49 extending between the rear uprights 16 and is held in raised position by a spring 50 connected at one end to the treadle 48 and at its other end to the frame.

A. suitable mechanism is provided for feeding string automatically to the handle positioning mechanism and cutting the string to the desired length. With this in view a hollow tube 65 (see particularly Fig. 4) is secured to the frame and is sleeve 68 is connected by a strap 72 with a relatively large pulley 7 5 rotatably mounted on a stud 76 projecting from the frame. A relatively small pulley 78 preferably formed integrally with the pulley 75 is connected by a strap 79 to a stud S secured to the slide 24. The relation of the diameters of the pulleys 75 and 78 is such that the string 66 is fed an amount equal to the length of string in each handle 12 as the slide 24 moves from its forward position to its rear position. The arrangement is such that as the slide 24 is retracted or moved rearwardly, the pawl 70 is moved first into engagement with the string 66 and then forwardly to carry the string across the top surface of the plate 20 to the position shown in Fig. 4.

As the slide 24 is moved forwardly into operative position, the pull on the straps 79 and 72 is released and the pawl 70 is first disengaged from the string and then moved rearwardly by a spring 100 secured at one end to said pawl and at the other end to the outer end of the tube 65. The mechanism for cutting the string may comprise an arm securedv to the shaft 45 near one end thereof and is connected to one end of a rod 56, the other end of which is connected to one end of a lever 57 pivotally mounted on a lug 58 depending from the plate 20 of the frame. The other end of the lever 57 is pivotally connected with a knife 60 mounted to move in a guideway in the frame. The knife 60 is arranged to cooperate with a cutting edge which may be provided on the forward end of one of the guides 23.

In the operation of the device the foot treadle 48 is moved downwardly thereby actuating the arm 41 of the bell crank through the connecting rod 47 to move the slide 24 forwardly. At the same time the arm is actuated to operate the knife to cut the string 66 to the desired length. As the slide 24 moves forward the piece of string which has been cut to length is moved forwardly and shaped around the surface 28 of the template 27 with the free ends of the string extending forwardly from the latter in parallel relation as shown in Fig. 5. The top surface of the bag 10 is then placed against the positioning surfaces 31 on the forward ends of the arms 30 so that one side of the bag 10 rests uponthe ends of the string or between the string and the apron 26 depending upon whether it is desired to secure the string to the outer or inner surface of the bag. The fastener setting devices 35 and 86 are then operated to insert the top fasteners 80 as shown in Fig. 6. The foot treadle 48 is then released and the spring 50 retracts the slide 24 to the position shown in Fig. 7 and at the same time causing the string 66 to be fed across the plate 20 to the position shown inFig. 4. The top edge of the bag 10 now is placed against the positioning surface 33 upon the forward edge of the template 27 and the fastening devices 35 and 36 operated to insert the lower fasteners 81 as shown in Fig. 7

It will be noted that the positioning surfaces 31 are spaced forwardly from the forward edge of the template 27 when the slide is moved to its forward position thereby permitting the bag and handle 12 to be moved relatively to permit the removal of the handle 12 from the template 27 when the slide 24 is retracted.

What I claim is:

1. The combination with means for secur ing a string handle to a bag, of a frame, a template on said frame for positioning said handle, a member for positioning a bag in a predetermined relation'to said template, and means for moving one of said members relative to another to permit the removal of said handle from said template after the former has been secured to the bag.

2. The combination with means for securing a string handle to a bag, of a frame, a template on said frame for positioning a string handle, and a bag positioning member movable towards and away from said template.

3. The combination with means for securing a string handle to a bag, of a frame, a template on the frame, a slide movable on the frame adapted to cooperate with said template to position astring handle, means for positioning the top edge of a bag relative to said template, and means for moving the slide towards and away from the template to position a string thereagainst with the free ends extending therefrom substantially parallel.

4. The combination with means for securing a string handle to a bag, template on the frame, a slide movable to cooperate with the template to position a string handle, a movable member for positioning a bag with its top edge in spaced relation to said template, and means for moving the slide towards and away from the 7 template to position a string thereagainst.

5. The combination with means for securing a string handle to a bag, of aframe, a,

of a frame, a

string thereagainst and means for positioning the bag when the slide is retracted.

7 The combination with means for securing a string handle to a bag, of a frame, a template on said frame for positioning a string handle, a member for positioning a bag in a predetermined relation to said template, means for moving one of said members relative to another, and means actuated by said movable member for feeding string adjacent said template and cutting the same to a predetermined length. I

8. The combination with means for secur- 7 ing a string handle to a bag, of means for positioning a bag and string handle relatively including a slide, means for moving said slide, and means movable as said slide moves away from said handle for feeding away from the template to position a string thereagain'st, and means operable as the slide is retracted for feeding string from a sup ply between said slide and template and for cutting the string to the desired length. p In testimony whereof I aflix my signature.

CABLETON G EATON.

template onthe frame, a slide movable to cooperate with the template to position a string handle, arms projecting forwardly from said slide for positioning a bag with its top edge in spaced relation to said template when said slide is in its forward position, and means for moving the slide towards and away from the template to position a string thereagainst.

6. The combination with means for securing a string handle to a bag, of a frame, a template on the frame, a slide movable to cooperate with the template to position a string handle, arms projecting forwardly from said slide for positioning a bag with its top edge'in spaced relation to said tem-' plate when said slide is in its forward position, means for moving the slide towards and away from the template to position a a slide movableto 

